2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
28 #include <net/bluetooth/hci.h>
31 #define HCI_PRIO_MAX 7
33 /* HCI Core structures */
37 __u8 pscan_period_mode;
45 struct inquiry_entry {
46 struct list_head all; /* inq_cache.all */
47 struct list_head list; /* unknown or resolve */
55 struct inquiry_data data;
58 struct discovery_state {
67 struct list_head all; /* All devices found during inquiry */
68 struct list_head unknown; /* Name state not known */
69 struct list_head resolve; /* Name needs to be resolved */
73 struct hci_conn_hash {
74 struct list_head list;
82 struct list_head list;
88 struct list_head list;
95 struct list_head list;
107 struct list_head list;
110 u8 val[HCI_LINK_KEY_SIZE];
115 struct list_head list;
121 #define HCI_MAX_SHORT_NAME_LENGTH 10
128 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
131 #define HCI_MAX_PAGES 3
133 #define NUM_REASSEMBLY 4
135 struct list_head list;
144 bdaddr_t static_addr;
146 __u8 dev_name[HCI_MAX_NAME_LENGTH];
147 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
148 __u8 eir[HCI_MAX_EIR_LENGTH];
153 __u8 features[HCI_MAX_PAGES][8];
155 __u8 le_white_list_size;
167 __u16 page_scan_interval;
168 __u16 page_scan_window;
170 __u16 le_scan_interval;
171 __u16 le_scan_window;
172 __u16 le_conn_min_interval;
173 __u16 le_conn_max_interval;
187 __u16 sniff_min_interval;
188 __u16 sniff_max_interval;
193 __u32 amp_min_latency;
197 __u16 amp_assoc_size;
198 __u32 amp_max_flush_to;
199 __u32 amp_be_flush_to;
201 struct amp_assoc loc_assoc;
205 unsigned int auto_accept_delay;
207 unsigned long quirks;
210 unsigned int acl_cnt;
211 unsigned int sco_cnt;
214 unsigned int acl_mtu;
215 unsigned int sco_mtu;
217 unsigned int acl_pkts;
218 unsigned int sco_pkts;
219 unsigned int le_pkts;
226 unsigned long acl_last_tx;
227 unsigned long sco_last_tx;
228 unsigned long le_last_tx;
230 struct workqueue_struct *workqueue;
231 struct workqueue_struct *req_workqueue;
233 struct work_struct power_on;
234 struct delayed_work power_off;
236 __u16 discov_timeout;
237 struct delayed_work discov_off;
239 struct delayed_work service_cache;
241 struct timer_list cmd_timer;
243 struct work_struct rx_work;
244 struct work_struct cmd_work;
245 struct work_struct tx_work;
247 struct sk_buff_head rx_q;
248 struct sk_buff_head raw_q;
249 struct sk_buff_head cmd_q;
251 struct sk_buff *recv_evt;
252 struct sk_buff *sent_cmd;
253 struct sk_buff *reassembly[NUM_REASSEMBLY];
255 struct mutex req_lock;
256 wait_queue_head_t req_wait_q;
260 struct list_head mgmt_pending;
262 struct discovery_state discovery;
263 struct hci_conn_hash conn_hash;
264 struct list_head blacklist;
266 struct list_head uuids;
268 struct list_head link_keys;
270 struct list_head long_term_keys;
272 struct list_head remote_oob_data;
274 struct hci_dev_stats stat;
278 struct dentry *debugfs;
282 struct rfkill *rfkill;
284 unsigned long dev_flags;
286 struct delayed_work le_scan_disable;
289 __u8 adv_data[HCI_MAX_AD_LENGTH];
291 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
292 __u8 scan_rsp_data_len;
294 int (*open)(struct hci_dev *hdev);
295 int (*close)(struct hci_dev *hdev);
296 int (*flush)(struct hci_dev *hdev);
297 int (*setup)(struct hci_dev *hdev);
298 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
299 void (*notify)(struct hci_dev *hdev, unsigned int evt);
302 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
305 struct list_head list;
320 __u8 features[HCI_MAX_PAGES][8];
327 __u8 pending_sec_level;
331 __u32 passkey_notify;
332 __u8 passkey_entered;
344 struct sk_buff_head data_q;
345 struct list_head chan_list;
347 struct delayed_work disc_work;
348 struct delayed_work auto_accept_work;
349 struct delayed_work idle_work;
353 struct hci_dev *hdev;
357 struct amp_mgr *amp_mgr;
359 struct hci_conn *link;
361 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
362 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
363 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
367 struct list_head list;
369 struct hci_conn *conn;
370 struct sk_buff_head data_q;
375 extern struct list_head hci_dev_list;
376 extern struct list_head hci_cb_list;
377 extern rwlock_t hci_dev_list_lock;
378 extern rwlock_t hci_cb_list_lock;
380 /* ----- HCI interface to upper protocols ----- */
381 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
382 void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
383 int l2cap_disconn_ind(struct hci_conn *hcon);
384 void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
385 int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
386 int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
388 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
389 void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
390 void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
391 int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
393 /* ----- Inquiry cache ----- */
394 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
395 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
397 static inline void discovery_init(struct hci_dev *hdev)
399 hdev->discovery.state = DISCOVERY_STOPPED;
400 INIT_LIST_HEAD(&hdev->discovery.all);
401 INIT_LIST_HEAD(&hdev->discovery.unknown);
402 INIT_LIST_HEAD(&hdev->discovery.resolve);
405 bool hci_discovery_active(struct hci_dev *hdev);
407 void hci_discovery_set_state(struct hci_dev *hdev, int state);
409 static inline int inquiry_cache_empty(struct hci_dev *hdev)
411 return list_empty(&hdev->discovery.all);
414 static inline long inquiry_cache_age(struct hci_dev *hdev)
416 struct discovery_state *c = &hdev->discovery;
417 return jiffies - c->timestamp;
420 static inline long inquiry_entry_age(struct inquiry_entry *e)
422 return jiffies - e->timestamp;
425 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
427 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
429 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
432 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
433 struct inquiry_entry *ie);
434 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
435 bool name_known, bool *ssp);
436 void hci_inquiry_cache_flush(struct hci_dev *hdev);
438 /* ----- HCI Connections ----- */
441 HCI_CONN_REAUTH_PEND,
442 HCI_CONN_ENCRYPT_PEND,
443 HCI_CONN_RSWITCH_PEND,
444 HCI_CONN_MODE_CHANGE_PEND,
445 HCI_CONN_SCO_SETUP_PEND,
446 HCI_CONN_LE_SMP_PEND,
447 HCI_CONN_MGMT_CONNECTED,
448 HCI_CONN_SSP_ENABLED,
453 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
455 struct hci_dev *hdev = conn->hdev;
456 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
457 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
460 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
462 struct hci_conn_hash *h = &hdev->conn_hash;
463 list_add_rcu(&c->list, &h->list);
481 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
483 struct hci_conn_hash *h = &hdev->conn_hash;
485 list_del_rcu(&c->list);
505 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
507 struct hci_conn_hash *h = &hdev->conn_hash;
523 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
526 struct hci_conn_hash *h = &hdev->conn_hash;
531 list_for_each_entry_rcu(c, &h->list, list) {
532 if (c->handle == handle) {
542 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
543 __u8 type, bdaddr_t *ba)
545 struct hci_conn_hash *h = &hdev->conn_hash;
550 list_for_each_entry_rcu(c, &h->list, list) {
551 if (c->type == type && !bacmp(&c->dst, ba)) {
562 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
563 __u8 type, __u16 state)
565 struct hci_conn_hash *h = &hdev->conn_hash;
570 list_for_each_entry_rcu(c, &h->list, list) {
571 if (c->type == type && c->state == state) {
582 void hci_disconnect(struct hci_conn *conn, __u8 reason);
583 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
584 void hci_sco_setup(struct hci_conn *conn, __u8 status);
586 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
587 int hci_conn_del(struct hci_conn *conn);
588 void hci_conn_hash_flush(struct hci_dev *hdev);
589 void hci_conn_check_pending(struct hci_dev *hdev);
591 struct hci_chan *hci_chan_create(struct hci_conn *conn);
592 void hci_chan_del(struct hci_chan *chan);
593 void hci_chan_list_flush(struct hci_conn *conn);
594 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
596 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
597 __u8 dst_type, __u8 sec_level, __u8 auth_type);
598 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
600 int hci_conn_check_link_mode(struct hci_conn *conn);
601 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
602 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
603 int hci_conn_change_link_key(struct hci_conn *conn);
604 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
606 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
609 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
610 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
611 * working or anything else. They just guarantee that the object is available
612 * and can be dereferenced. So you can use its locks, local variables and any
613 * other constant data.
614 * Before accessing runtime data, you _must_ lock the object and then check that
615 * it is still running. As soon as you release the locks, the connection might
616 * get dropped, though.
618 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
619 * how long the underlying connection is held. So every channel that runs on the
620 * hci_conn object calls this to prevent the connection from disappearing. As
621 * long as you hold a device, you must also guarantee that you have a valid
622 * reference to the device via hci_conn_get() (or the initial reference from
624 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
625 * break because nobody cares for that. But this means, we cannot use
626 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
629 static inline void hci_conn_get(struct hci_conn *conn)
631 get_device(&conn->dev);
634 static inline void hci_conn_put(struct hci_conn *conn)
636 put_device(&conn->dev);
639 static inline void hci_conn_hold(struct hci_conn *conn)
641 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
643 atomic_inc(&conn->refcnt);
644 cancel_delayed_work(&conn->disc_work);
647 static inline void hci_conn_drop(struct hci_conn *conn)
649 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
651 if (atomic_dec_and_test(&conn->refcnt)) {
654 switch (conn->type) {
657 cancel_delayed_work(&conn->idle_work);
658 if (conn->state == BT_CONNECTED) {
659 timeo = conn->disc_timeout;
663 timeo = msecs_to_jiffies(10);
668 timeo = conn->disc_timeout;
672 timeo = msecs_to_jiffies(10);
676 cancel_delayed_work(&conn->disc_work);
677 queue_delayed_work(conn->hdev->workqueue,
678 &conn->disc_work, timeo);
682 /* ----- HCI Devices ----- */
683 static inline void hci_dev_put(struct hci_dev *d)
685 BT_DBG("%s orig refcnt %d", d->name,
686 atomic_read(&d->dev.kobj.kref.refcount));
691 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
693 BT_DBG("%s orig refcnt %d", d->name,
694 atomic_read(&d->dev.kobj.kref.refcount));
700 #define hci_dev_lock(d) mutex_lock(&d->lock)
701 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
703 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
704 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
706 static inline void *hci_get_drvdata(struct hci_dev *hdev)
708 return dev_get_drvdata(&hdev->dev);
711 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
713 dev_set_drvdata(&hdev->dev, data);
716 struct hci_dev *hci_dev_get(int index);
717 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
719 struct hci_dev *hci_alloc_dev(void);
720 void hci_free_dev(struct hci_dev *hdev);
721 int hci_register_dev(struct hci_dev *hdev);
722 void hci_unregister_dev(struct hci_dev *hdev);
723 int hci_suspend_dev(struct hci_dev *hdev);
724 int hci_resume_dev(struct hci_dev *hdev);
725 int hci_dev_open(__u16 dev);
726 int hci_dev_close(__u16 dev);
727 int hci_dev_reset(__u16 dev);
728 int hci_dev_reset_stat(__u16 dev);
729 int hci_dev_cmd(unsigned int cmd, void __user *arg);
730 int hci_get_dev_list(void __user *arg);
731 int hci_get_dev_info(void __user *arg);
732 int hci_get_conn_list(void __user *arg);
733 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
734 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
735 int hci_inquiry(void __user *arg);
737 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
738 bdaddr_t *bdaddr, u8 type);
739 int hci_blacklist_clear(struct hci_dev *hdev);
740 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
741 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
743 int hci_uuids_clear(struct hci_dev *hdev);
745 int hci_link_keys_clear(struct hci_dev *hdev);
746 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
747 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
748 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
749 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
750 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
751 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
752 __le16 ediv, u8 rand[8]);
753 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
755 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
756 int hci_smp_ltks_clear(struct hci_dev *hdev);
757 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
759 int hci_remote_oob_data_clear(struct hci_dev *hdev);
760 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
762 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
764 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
766 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
768 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
769 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
770 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
772 void hci_init_sysfs(struct hci_dev *hdev);
773 void hci_conn_init_sysfs(struct hci_conn *conn);
774 void hci_conn_add_sysfs(struct hci_conn *conn);
775 void hci_conn_del_sysfs(struct hci_conn *conn);
777 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
779 /* ----- LMP capabilities ----- */
780 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
781 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
782 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
783 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
784 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
785 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
786 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
787 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
788 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
789 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
790 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
791 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
792 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
793 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
794 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
795 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
796 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
797 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
798 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
800 /* ----- Extended LMP capabilities ----- */
801 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
802 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
803 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
805 /* ----- HCI protocols ----- */
806 #define HCI_PROTO_DEFER 0x01
808 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
809 __u8 type, __u8 *flags)
813 return l2cap_connect_ind(hdev, bdaddr);
817 return sco_connect_ind(hdev, bdaddr, flags);
820 BT_ERR("unknown link type %d", type);
825 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
827 switch (conn->type) {
830 l2cap_connect_cfm(conn, status);
835 sco_connect_cfm(conn, status);
839 BT_ERR("unknown link type %d", conn->type);
843 if (conn->connect_cfm_cb)
844 conn->connect_cfm_cb(conn, status);
847 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
849 if (conn->type != ACL_LINK && conn->type != LE_LINK)
850 return HCI_ERROR_REMOTE_USER_TERM;
852 return l2cap_disconn_ind(conn);
855 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
857 switch (conn->type) {
860 l2cap_disconn_cfm(conn, reason);
865 sco_disconn_cfm(conn, reason);
868 /* L2CAP would be handled for BREDR chan */
873 BT_ERR("unknown link type %d", conn->type);
877 if (conn->disconn_cfm_cb)
878 conn->disconn_cfm_cb(conn, reason);
881 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
885 if (conn->type != ACL_LINK && conn->type != LE_LINK)
888 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
891 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
892 l2cap_security_cfm(conn, status, encrypt);
894 if (conn->security_cfm_cb)
895 conn->security_cfm_cb(conn, status);
898 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
901 if (conn->type != ACL_LINK && conn->type != LE_LINK)
904 l2cap_security_cfm(conn, status, encrypt);
906 if (conn->security_cfm_cb)
907 conn->security_cfm_cb(conn, status);
910 /* ----- HCI callbacks ----- */
912 struct list_head list;
916 void (*security_cfm) (struct hci_conn *conn, __u8 status,
918 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
919 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
922 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
927 hci_proto_auth_cfm(conn, status);
929 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
932 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
934 read_lock(&hci_cb_list_lock);
935 list_for_each_entry(cb, &hci_cb_list, list) {
936 if (cb->security_cfm)
937 cb->security_cfm(conn, status, encrypt);
939 read_unlock(&hci_cb_list_lock);
942 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
947 if (conn->sec_level == BT_SECURITY_SDP)
948 conn->sec_level = BT_SECURITY_LOW;
950 if (conn->pending_sec_level > conn->sec_level)
951 conn->sec_level = conn->pending_sec_level;
953 hci_proto_encrypt_cfm(conn, status, encrypt);
955 read_lock(&hci_cb_list_lock);
956 list_for_each_entry(cb, &hci_cb_list, list) {
957 if (cb->security_cfm)
958 cb->security_cfm(conn, status, encrypt);
960 read_unlock(&hci_cb_list_lock);
963 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
967 read_lock(&hci_cb_list_lock);
968 list_for_each_entry(cb, &hci_cb_list, list) {
969 if (cb->key_change_cfm)
970 cb->key_change_cfm(conn, status);
972 read_unlock(&hci_cb_list_lock);
975 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
980 read_lock(&hci_cb_list_lock);
981 list_for_each_entry(cb, &hci_cb_list, list) {
982 if (cb->role_switch_cfm)
983 cb->role_switch_cfm(conn, status, role);
985 read_unlock(&hci_cb_list_lock);
988 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
995 while (parsed < data_len - 1) {
996 u8 field_len = data[0];
1001 parsed += field_len + 1;
1003 if (parsed > data_len)
1006 if (data[1] == type)
1009 data += field_len + 1;
1015 int hci_register_cb(struct hci_cb *hcb);
1016 int hci_unregister_cb(struct hci_cb *hcb);
1018 struct hci_request {
1019 struct hci_dev *hdev;
1020 struct sk_buff_head cmd_q;
1022 /* If something goes wrong when building the HCI request, the error
1023 * value is stored in this field.
1028 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1029 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1030 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1032 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1033 const void *param, u8 event);
1034 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1036 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1037 const void *param, u32 timeout);
1038 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1039 const void *param, u8 event, u32 timeout);
1041 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1043 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1044 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1046 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1048 /* ----- HCI Sockets ----- */
1049 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1050 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1051 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1053 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1055 /* Management interface */
1056 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1057 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1058 BIT(BDADDR_LE_RANDOM))
1059 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1060 BIT(BDADDR_LE_PUBLIC) | \
1061 BIT(BDADDR_LE_RANDOM))
1063 /* These LE scan and inquiry parameters were chosen according to LE General
1064 * Discovery Procedure specification.
1066 #define DISCOV_LE_SCAN_WIN 0x12
1067 #define DISCOV_LE_SCAN_INT 0x12
1068 #define DISCOV_LE_TIMEOUT msecs_to_jiffies(10240)
1069 #define DISCOV_INTERLEAVED_TIMEOUT msecs_to_jiffies(5120)
1070 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1071 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1073 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1074 void mgmt_index_added(struct hci_dev *hdev);
1075 void mgmt_index_removed(struct hci_dev *hdev);
1076 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1077 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1078 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1079 void mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1080 void mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1081 void mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1082 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1084 void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1085 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1087 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1088 u8 link_type, u8 addr_type, u8 reason);
1089 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1090 u8 link_type, u8 addr_type, u8 status);
1091 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1092 u8 addr_type, u8 status);
1093 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1094 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1096 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1098 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1099 u8 link_type, u8 addr_type, __le32 value,
1101 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1102 u8 link_type, u8 addr_type, u8 status);
1103 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1104 u8 link_type, u8 addr_type, u8 status);
1105 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1106 u8 link_type, u8 addr_type);
1107 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1108 u8 link_type, u8 addr_type, u8 status);
1109 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1110 u8 link_type, u8 addr_type, u8 status);
1111 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1112 u8 link_type, u8 addr_type, u32 passkey,
1114 void mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1115 u8 addr_type, u8 status);
1116 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1117 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1118 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1120 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1121 void mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1122 u8 *randomizer, u8 status);
1123 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1124 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1125 u8 ssp, u8 *eir, u16 eir_len);
1126 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1127 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1128 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1129 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1130 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1131 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1132 void mgmt_reenable_advertising(struct hci_dev *hdev);
1134 /* HCI info for socket */
1135 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1139 struct hci_dev *hdev;
1140 struct hci_filter filter;
1142 unsigned short channel;
1145 /* HCI security filter */
1146 #define HCI_SFLT_MAX_OGF 5
1148 struct hci_sec_filter {
1150 __u32 event_mask[2];
1151 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1154 /* ----- HCI requests ----- */
1155 #define HCI_REQ_DONE 0
1156 #define HCI_REQ_PEND 1
1157 #define HCI_REQ_CANCELED 2
1159 #define hci_req_lock(d) mutex_lock(&d->req_lock)
1160 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1162 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1163 u16 latency, u16 to_multiplier);
1164 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1167 #define SCO_AIRMODE_MASK 0x0003
1168 #define SCO_AIRMODE_CVSD 0x0000
1169 #define SCO_AIRMODE_TRANSP 0x0003
1171 #endif /* __HCI_CORE_H */